<!DOCTYPE html>
<html class="reftest-wait">
  <head>
  </head>
  <body>
    <div id="host"></div>
    <script>
      var host, root;

      function run() {
        host = document.getElementById("host");
        root = host.createShadowRoot();
        root.innerHTML = '<style>input ~ div { background: red; transition: background 100ms; } input:checked ~ div { background: green; }</style><input id="one" type="checkbox"><div style="height: 50px; width: 50px;"></div>';
      }

      function tweak() {
        var el = root.getElementById("one");
        el.checked = true;
        el.nextSibling.addEventListener("transitionend", function() {
          setTimeout(()=>{document.documentElement.removeAttribute("class")}, 1000); // wait for the checkbox SVG image to load on Android
        });
      }

      if (document.body.createShadowRoot) {
        run();
        window.addEventListener("MozReftestInvalidate", tweak);
      } else {
        document.documentElement.className = "";
      }
    </script>
  </body>
</html>
